Skiving machine



M. H. BALLARD SKIVING MACHINE July 12, 1 932.

Filed May 27, 1930 5 Sheets-Sheet 2 Fig. 2.

wun l l hhnnnnu I I X I v x I r r July 12, 1932. M. H, BALLARD SKIVING MACHINE Filed May 27, 1930 5 Sheets-Sheet 3 Fig. 3

July 12, 1932. M. H. BALLARD SKTVING MACHTNF! Filed May 27, 1930 5 Sheets-Sheet 4 July 12, 1932. M, L RD 1,866,918

SKIVING MACHINE F'iled May 27, 1930 5 SheecsSheet 5 Patented July 12, 1932 UNITED STATES PATENT OFFICE MILTON H. BALLARD, 013 BEVERLY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY SKIVING MACHINE Application filed. May 27, 1930. Serial No. 456,208.

This invention relates toskiving machines and is herein illustrated as embodied in a machine of the Amazeen type.

In machines of this type the work is fed to a rotary disk knife by a feed roll and a cooperating feed disk, the work being held down upon the roll by a presser and guided by an edge guide. Certain pieces of work, for example Vamps, having curved edges which are to be skived, must be swung considerably during the skiving operation,in the case of vamps through one hundred and eighty degrees or more,-so that the leading end of the work, which at the beginning of the skiving operation extends away from the operator, may, before the completion of said operation, be swung around until it extends toward the operator in the vicinity of the inner end of the feed roll.

In accordance with one feature of the present invention, the presser and guide are mounted upon an overhanging arm which is firmly fastened to a part of the machine located above the feed roll to provide a free and unobstructed space beneath the arm and adjacent to the inner end of the feed roll to permit vamps and similar articles to be swung freely about the edge guide. In the illustrated machine this arm extends over the feed roll so that an unobstructed space is provided beneath the arm and above the bearing of the roll into which the leading end of a piece of work may be swung during the skiving operation.

It is desirable to provide for ready access to the knife for removal and replacement thereof. To this end, according to another feature of the invention, the feed disk is mounted upon a carrier which may be swung toward and from the knife. In the illustrated construction the bracket in which the feed disk shaft is mounted and the overhanging arm, referred to above, at the outer end of which the presser and edge guide are located, are mounted on a carrier which may be swung about a substantially vertical axis. lVhen, therefore, it is desired to remove and replace the knife, or for any reason to inspect it, the carrier may be swung out. A stop determines the inner position of the swinging carrier so that, when it is swung in toward the knife, its swinging movement is arrested with the feed disk, presser and edge guide in predetermined proper positions with respect to the knife.

Other features of the invention relate to a novel knife guard which may readily be moved into and out of operative relation to the knife and to a simplified knife adjustment.

These and other features of the invention including certain details of construction and combinations of parts will be described as embodied in an illustrated machine and pointed out in the appended claims.

Referring now to the accompanying drawlngs,

Fig. 1 is a front elevation of a machine in which the present invention is embodied;

Fig. 2 is a plan of the machine;

Fig. 3 is an elevation 0n anenlarged scale of a portion of the machine showing more particularly the swinging carrier for the feed disk, the presser and the edge guide;

Fig. at is an elevation of another portion of the machine showing the mounting of the knife and the knife guard;

Fig. 5 is a vertical section principally on the line VV of Fig. 3;

Fig. 6 is a horizontal section on the line VIVI of Fig. 3;

Fig. 7 is a perspective of certain parts in separated relation; and

Fig. 8 is a plan of the knife guard.

The general organization of the machine is similar to that of themachine shown in Letters Patent No. 1,652,513, granted Dec. 13, 1927, upon an application filed in my name; and before proceeding to a description of the new features, the old construction will be briefly described. The machine comprises a rotary feed roll 11 and a rotary feed disk 13 which cooperate to feed the work away from the observer, as viewed in Fig. 1, to a rotary disk knife 15, the edge of the work contacting with an edge guide 17, and the margin of the work being pressed down upon the feed roll 11 by a presser 19. The feed roll shaft is rotatable in a block 21 which is adjustable substantially horizontally in a LOU carrier 23, said carrier being adjustable in a curved guideway the center of curvature of which is at the upper inner corner of the roll when the horizontally adjustable block 21 is positioned at zero on the scale, as it is in Fig. 1. The curved guideway (not shown) in which the carrier 23 is adjustable is located at the outer end of a large arm 27, said arm being adjustable about the axis of a vertical stud 29 by turning a thumb-screw 31 to swing the feed roll 11 toward and from the knife. The feed roll shaft is connected by means of universal joints with a pulley 33 (Fig. 2) which is driven by belts and pulleys from a small pulley 35 on the driving shaft 37. A pulley 39 and a belt 11 serve to rotate the knife shaft, and another pulley 13 and belt 15 serve to rotate the shaft of the grinder 19 (Figs. 1 and 4). The feed roll carrier 23 (Fig. 1) is connected by a link 51 with a treacTle-controlled arm 53 pivoted at 55 and having a lug 57. Two spaced adjustable nuts 59 threaded on a small screw-threaded rod 61 limit the rocking movement of this arm. The machine as thus far described is or may be substantially the same as the patented machine and will not be described further in detail. In order to prevent the chips or skivings from curling back over the presser 19 and becoming caught between it and the work a transparent chip deflector 62 is provided which may be made of celluloid, a deflector of this type being disclosed in Letters Patent No. 1,638,933, granted August 16, 1927, upon an application filed in the name of Lester B. Hooper.

The feed disk 13 has an upright shaft 81 rotatable in bearings in spaced bosses 82, 84 formed integral with a casting 83. The feed disk is urged downwardly at all times by a coiled spring 85 which bears at its lower end upon a collar 87 adjustably fastened by a set screw 89 to the feed disk shaft and at its upper end against the under side of the boss 82. A collar 91 adjustably fastened to the feed disk shaft contacts with the lower boss 84 and thus limits the downward movement of the feed disk. A lighter coiled spring 93, which surrounds the upper portion of the feed disk shaft, rests upon the boss 82 and bears with its upper end against the underside of the hub of a pulley 95 which is ad justably fastened to the upper portion of the. feed disk shaft by a set screw 97. The purpose of the spring 93 is to counteract to some extent the action of the spring 85 and thereby to make the feed disk rest more lightly upon the work than it would were the spring 93 not present. The tension of this spring may be varied by adjusting the hub of the pulley up or down on the feed disk shaft.

The casting 83 has a round stem 86 which is adjustably fastened in a split boss 99 by a pinch-screw 101, said boss being integral with a carrier 103 having a hollow vertical sleeve 103 which is rotatable upon a hollow upright bearing 105. This bearing member is integral with the block 21 in which the feed roll shaft is mounted, being part of an upward extension 21 at the rear end of said block. The boss 103 is split at its rear end and thus provided with two cars 103 103. A pinch-screw 107, which passes loosely through the front ear 103 and is threaded into the rear ear 1.03 (Fig. 2) holds the carrier 103 in the adjusted position shown. The feed disk shaft is driven from the pulley 95 by a belt 109 which passes around said pulley,

over idler pulleys 111, down through the 1101- low bearing member 105, in which it runs cross, and around a pulley 113 on the feed roll shaft. The idle pulleys 111 are carried at the upper end of a bracket 115 the hub of which is split and adjustably fastened to the stem 86 of the casting 83 by a pinchscrew 117 WVhen now the pinch-screw 107 has been loosened, the carrier 103, together with the casting 83 and the feed disk, may be swung out toward the observer (Fig. 1) to permit ready access to the knife. In order to cause the feed disk, when it is swung back into operative position, to stop in just the desired relation to the knife and feed roll, a stop screw 119 threaded through a horizontally projecting ear on the upward extension 21 of the block 21 contacts with a downwardly extending portion of the ear 103.

The presser 19 and edge guide 17 are supported by the carrier 103 and are therefore also swung when the carrier with the feed disk is swung about the axis of the hollow bearing member 105. The horizontal stem of the edge guide 17 (Fig. 3) is fastened to the lower portion of a horizontally extending arm 120 which overhangs the feed roll and is adjustably carried by the carrier 103 in a. manner presently to be described. The vertical stem 121 of the presser 119 is vertically slidable in a vertical bore formed in a boss at the outer end of the arm 120, the upper end of the stem being threaded to receive a stop nut 123 which limits the downward movement of the presser. In 0rder to urge the presser yieldingly downward at all times, a bell-crank lever 125 pivoted at 127 to the arm 120 has its horizontal arm eXtendin g through a vertical slot 129 in the boss and into a vertical slot 131 formed in the stem 121 of the presser 117. The upright arm of the bell-crank lever 125 has at its upper end a bore through which is threaded an enlarged portion 133 of a screw 135. A coiled compression spring 137 extends at its lower end into a socket formed in the bracket 120, its upper end bearing against the enlarged portion 133 of the screw 135, the reduced lower end of the screw extending into the coiled spring. This spring thus holds the presser 19 normally in the position shown; and the tension of the spring may be varied by turning the screw 135.

It is desirable that the presser and edge guide should be adjustable together horizonbracket being fastened to the carrier 103 for vertical and angular adjustment in a manner presently to be described. The bracket 143 has a horizontal slot 145; and extending through this slot and threaded into the arm 120 is a cap screw 147 so that, when the cap screw has been loosened, the arm 120 may be adjusted horizontally on the bracket 143. In order to facilitate this adjustment (Fig. 6) a small stud 149, which is rotatable in a bore in the bracket 143 has at its inner end a small disk 151 provided with an eccentrically placed short stud or crank-pin 153 which is received in a vertical slot 155 formed in the arm 120, the stud 149 being provided with a kerf to receive a screw driver by which it may be turned. When, now, the cap screw 147 has been loosened, the stud may be turned to adjust the arm 120 horizontally with respect to the bracket 143. In order to prevent the arm 120 and the bracket 143 from separating when the cap screw is loosened slightly, a bow-spring 157 has in it a hole to receive the stem of the cap screw 147 which normally holds the spring flat against the outer face of the bracket 143, said spring having a forked right-hand end to straddle the head of the stud 149.

In order to fasten the bracket 143 to the carrier 103 for both vertical and angular adjustment (Fig. 7), the carrier 103 is provided with a vertical guideway 159 to receive a vertical guide rib 161 on a small rounded bearing block 163, said block being received in a. cylindrical socket 165 in the bracket 143. The bracket has a vertical slot 167, and the rounded block 163 has a vertical slot 169. A screw 171, having beneath its head'a washer 173, passes through the slots 165, 169, and is threaded into a hole 175 leading from the bottom of the guideway 159 in the carrier 103. The rounded block 163, which, as will presently appear serves as a bearing about which the bracket 143 may be angularly adjusted, is cut away on one side to provide two fiat surfaces 177, 179 which are adapted to be engaged respectively by adjusting screws 181, 183 located respectively above and below the level of the stem of the screw 171 (Fig. 3). If now the screw 171 is loosened slightly, the screws 181, 183 may be turned,

one of them in one direction and the other in the opposite direction, to adjust the bracket 143 angularly about the block 163.

The construction described above in which the presser and gage are mounted upon an overhanging arm so as to provide a free space beneath the arm and above the roll bearing not only permits Vamps and other pieces of work to be swung freely about the edge guide without danger of contacting with a stationary part of the machine but also possesses the further advantage that the-knife guard 213 (presently to be described) may remain in the original position into which it was adjusted for a new full-sized knife after the size of the knife has been reduced by guiding. When the diameter of the knife becomes smaller, due to grinding, the arm 27 is swung about its pivot 29 away from the observer, as viewed in Fig. 1, so as to move the presser close to the edge of the knife. WVhen this is done, the forward end of the knife guard 213 (Fig. 1) is received in the space between the overhanging arm 120 and the feed roll bearing 21.

The knife 15 (Fig. 4) is fast to the lower end of a shaft 185 which is mounted in a manner presently to be described in a hollow casting 187, said casting being adjustable up and down in the direction of extent of the slightly inclined knife shaft 185 upon a bracket 189 the adjustable mounting of which on the frame of the machine will be described later. The bracket 189 is forked at its left-hand end to provide two spaced arms 191, 193 having alined bores. The lower end of the hollow casting 187 has integral with its lower portion a depending sleeve 195 which is slidable in the bore in the arm 193. The casting 187 is hollow as has been noted, and its rear portion is cut away (Fig. 2). Into a bore in an upper portion of the casting which overhangs the upper arm 191 of the bracket 189 (Fig. 4), is driven a sleeve 197 which is alined with the sleeve 195 and is slidable in the bore in the upper arm 191. The casting 187 is thus slidably mounted for up-and-down movement in the arms 191, 193 of the bracket 189. The knife shaft 185 is rotatably mounted in the sleeves 195, 197 and has upon it a small grooved pulley 199, the hub of which is fastened to the shaft by a set screw 201. The lower end of this hub rests upon a portion of the casting 187 above the bore which leads down through the integral sleeve 195; and the upper end of the pulley rests against the lower end of the sleeve 197 which is rigid with the casting 187. Consequently, when the casting is ad justed up and down, the knife shaft and knife are adjusted with it. The up-anddown adjustment of the casting 187 is effected by turning a thumb-hold 203 which is fastened by a pin 205 to the upper end of a screw 207 which passesloosely through astationary sleeve 209, said sleeve being threaded through a threaded bore in an ear formed on the casting 187 which overhangs a portion of the bracket 189. This stationary sleeve bears with its upper end against the under side of the stem of the thumb-hold 203 and thus prevents downward movement of the screw 207. Upward movement is prevented by a small collar 211 which is fast to the screw and is received in a socket in the under side of the overhanging ear of the casting 187. hen, therefore, the screw is turned, the casting and with it the knife is adjusted up and down. The mounting of the knife, described above, is substantially the same as that shown in the patent to which reference has been made.

In machines of the present type the work passes beneath the knife and the chips above it. As the skived portion of the work passes beneath the knife it is liable to contact with the knife; and to prevent such occurrence there is provided a generally semi-circular knife guard 213 (Fig. 8) having a conical upper face which is complementary to the dished conical face of the under side of the knife. This guard is located beneath the knife, as shown in Fig. 4, and extends part way around, its outer edge being located outside the edge of the knife so that when, for example, a vamp is being skived, the skived portion will be prevented from contacting with the edge of the knife. It is desirable that this guard should be adjusted when the knife L is adjusted so as to maintain the knife and guard always in the same positions relative to one another. To this end the knife guard is mounted, in a manner presently to be de scribed, upon a bracket 215 (Fig. 4) which is adjustably mounted on the casting 187 by which the knife is carried. The bracket 215 has at its upper right-hand portion, as viewed in Fig. 4, a flange with a fiat face 217 having formed therein a substantially vertical guideway to receive a substantially vertical guide rib 219 (Fig. 2) projecting from a flat face formed on the casting 187. Cap screws 221, the stems of which pass through vertical slots in the flange and are threaded into the casting 187, hold the bracket adjustably in position on the casting 187. An adjusting screw 222 threaded through a bore in the top of the flange bears against the stem of the upper cap screw 221. hen this screw is screwed down, the bracket 215 is raised and when this screw is screwed up, the bracket descends by its weight. The bracket 215 has an upstanding boss 223 (Fig. 4) having a bore in which a rod 225 is adjustably held by a set screw 227. About the axis of this rod is pivoted the carrier for the knife guard .213. This carrier comprises a lower segmental portion 229 and an upwardly extending arm 231 having at its upper end a portion of inverted U-shape. One leg ofthe U-shaped portion has a bore to receive the reduced right-hand end of the rod 225, as viewed in Fig. 4; and through the other leg is threaded a screw 233 the conical inner end of which fits into a conical socket in the left-hand end of the rod 225.

The substantially horizontal segmental portion 229 (Fig. 8) of the guard carrier has a guideway 235; and an enlarged end 213 at the end of the stem 213 of the guard has a segmental guide rib extending into this guideway. A clamping screw 237 provided with a washer 239 has its stem passing through an elongated slot 241 in the segmental portion 229 and threaded into the enlarged end 213 of the stem of the guard. The guideway in this segmental portion 229 of the knife guard carrier has a curvature the center of which (indicated at 243 in Fig. 8) is in line with the axis of rotation of the knife shaft when the guard is in its operative position beneath the knife, as shown in Figs. 1 and 4. The curved edges of the guide proper 213 also have the point 243 as their center of ciuvature; and consequently, when the clamping screw 237 has been loosened the guard may be adjusted about the axis of rotation of the knife without otherwise changing its relation to the knife.

In Figs. 1 and 4, the knife guard 213 is shown in operative position with its upper conical. face close to the under complementary face of the knife. lVhen now it is desired to have access to the under side of the knife, for example to remove and replace it, the knife guard carrier 231 is swung down and away from the observer (Fig. 4) about the axis of the rod 225, the extent to which it mav be so swung depending upon the position of a stop screw 245 which is threaded through the base of the inverted U-shaped upper portion of the guard carrier 231 and is adapted to contact with. a stop in the form of a small boss 247 formed on the bracket 215. In order to hold the guard carrier in its backwardly swung position with the knife guard withdrawn from the knife as well as to hold it in the operative position shown, asmall pin 249 is driven through the substantially upright portion of the guard carrier 231, and its inner end is adapted to engage one side or the other of the tapered end of a locking pin 251. This pin is slidable in a bore formed in a portion of the bracket 215 and is urged downwardly at all times by a coiled spring 253 which bears at its lower end against the head of the pin and at its upper end against a shoulder at the upper end of the bore in which the head of the pin slides. The stem of the pin, which is smaller than thehead, passes up through the spring and has extending through its upper portion a small pin 255, the opposite ends of which ride in slots (one of which is shown at 257) formed in a portion of the bracket 215. In the position of parts shown in Fig. 4, the pin 249 extends in front of the front taper of the double-tapered end of the locking pin 251. WVhen now the guard carrier 231 is swung back about the axis of the small rod 225, the small pin 249 forces the locking pin 251 upwardly against the pressure of the spring 253 until the pin 249 passes back be- 'yond the thin lower end of the pin, whereupon the pin 251 descends.

It has been explained that when the guard carrier is swung back, in the manner which has just been described, the stop screw 245 limits the extent of this movement. When the guard carrier is swung forward again, the limit of this forward movement should be accurately controlled so that the guard may be returned exactly into proper position beneath the knife. To this end another stop screw 259 (Fig. 2) threaded through an upstanding lug 261 on the segmental portion 229 of the knife guard carrier is adapted to contact with the bracket 215.

lVith this construction the knife guard may be raised and lowered by loosening the cap screws 221, which hold the bracket 215 in adjusted vertical position, and turning the adjusting screw 222; and the guard may be adjusted angularly about the axis of the knife shaft by loosening the clamping screw 237 (Fig. 8) and sliding the enlarged end 213 at the end of the stem of the guard along the segmental portion 229 of the knife guard carrier. It is possible also (Fig. 4) to adjust the guard crosswise of the knife by loosening the set screw 245 and sliding the rod 225, and with it the guard carrier, to the right or left. When such adjustment is made, however, it is necessary also to raise or lower the bracket 215 by loosening the cap screws 221 and manipulating the adjusting screw 222.

It has been noted that the bracket 189, which carries the knife and the knife guard in the manner described above, is adjustable. To this end there is formed upon an overhanging arm 261 of the frame of the machine an inclined dovetailed guideway 263 to receive a dovetailed guide 265 formed on the inner side of the stem of the bracket 189. A stud 267 carried by the arm 261 extends through an elongated slot 269 and receives a washer 271 and a nut 273 having a handle 275. By turning the nut the bracket may be locked in adjusted position. In order to facilitate adjustment of the bracket 189, a long screw 277, rotatably mounted in a bore in a stationary boss 279 and held from longitudinal movement with respect thereto by a collar 281 and the hub 283 of a handle 284 both of which are pinned to the stem of the screw, is provided, said screw being threaded through a portion of the bracket 189 and extending into the slot 269. lVhen the nut 273 has been loosened, the screw may be turned to adjust the bracket 189, and with it the knife and the knife guard.

The mounting of the grinder 49 will not be described since it forms no part of the present invention but it will be stated that its bearings are carried by the bracket 189 so that it is adjusted with the knife and the knife guard. when the bracket 189 is adjusted.

The bracket 189, as has been stated, is adjusted in an inclined path. This path is parallel to the plane of the knife so that, during the adjustment of the bracket 189, the knife moves in its own plane. The purpose of this direction of adjustment is to permit the knife to be adjusted lengthwise of the roll to obtain the desired position of the knife lengthwise of the roll without the necessity (which formerly existed) of manipulating the screw 203 to change the height of the knife. The adjustment in prior machines of the knife bracket, which corresponds to the knife bracket 189 of the present machine, has been arranged to take place in a horizontal direction. When such a horizontal adjustment is present and the knife is inclined, adjustment to the right, as viewed in Fig. 4, would increase the space between the knife and that portion of the roll nearest to it so that the knife would then have to be lowered. On the other handadjustment to the left necessitates first that the knife be raised. The upand down adjustment of the knife by means of the adjusting screw 203 is of course necessary when certain changes in the position of the knife with respect to the feed roll are to be made; but in those cases in which only an adjustment of the knife endwiseof the roll is required, all that is necessary is to loosen the nut 27 3 and turn the handle 284 in the proper direction.

Although the invention has been set forth as embodied in a particular machine, it should be understood that the invention is not limited in the scope of its application to the particular machine which has been shown and described.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A machine of the class described having, in combination, a rotary disk knife, a feed roll located beneath the knife, a feed disk cooperating with the roll, a presser and an edge guide for holding the work on the roll and guiding it to the knife, an arm overhanging the roll upon which the presser and guide are mounted, and means for firmly fastening the arm to a part of the machine lo cated above the level of the top of the roll, there being a free and unobstructed space heneath the arm and at one end of the roll to permit pieces of work to be freely swung about the edge gage.

2. A machine of the class described having, in combination, a rotary disk knife, a feed roll located beneath the knife, a feed disk cooperating with the roll, a rotary shaft upon which the feed roll is mounted, a bear ing for the shaft, a presser for holding the work on the roll close to the edge of the knife, a guide for engaging the edge of the work, and an arm firmly fastened to a part of the machine located above the bearing for the roll shaft by which the presser and guide are carried whereby a free and unobstructed space is provided between the bearing and the arm.

3. A machine of the class described hav ing, in combination, a skiving knife, a feed roll, a feed disk, a presser, an edge guide, and a carrier for the feed disk, the presser and the edge guide mounted for swinging movement about a substantially vertical axis toward and from the knife, said carrier comprising an arm at the outer end of which the presser and edge guide are mounted, there being below the arm a free and unobstructed space to permit the work to be swung freely a out the edge guide.

4. A machine of the class described having, in combination, a rotary disk knife, a feed roll located beneath the knife, a presser and an edge guide for holding the work on the roll and guiding itto the knife, an arm overhanging the roll upon which the presser and edge guide are mounted, means for mounting said arm for substantially horizontal adjustment lengthwise of the roll, and means for rigidly fastening the arm to a part of the machine located above the level of the top of the roll. V

5. A machine of the class described having, in combination, a rotary disk knife, a feed roll located beneath the knife, a presser and an edge guide for holding the work on the roll and guiding it to the knife, an arm overhanging the roll upon which the presser and edge guide are mounted, means for mounting said armfor substantially horizontal adjustment lengthwise of the roll, and for angular adjustment in a substantially vertical plane, and means for rigidly fastening the arms to a part of the machine located above the level of the top of the roll.

6. A machine of the class described having, in combination, a rotary disk knife, a feed roll located beneath the knife, a presser and an edge guide for holding the work on the roll and guiding it to the knife, an arm overhanging the roll upon which the presser and edge guide are mounted, means for mounting said arm for angular adjustment in a substantially vertical plane and for substantially vertical adjustment toward and from the feed roll, and means for rigidly fastening the arm to a partof the machine located above the level of the top of the roll.

7. A machine of the class described having, in combination, a rotary disk knife, a feed roll for advancing work to theknife, a presser and edge guide for holding the work on the roll and guiding it to the knife, an

overhanging arm upon which the presser and gage are mounted, a bracket upon which the arm is mounted for horizontal adjustment, a carrier upon which the bracket is mounted for both vertical and angular adjustment, and means for rigidly fastening the bracket to a part of the machine located above the level of the top of the roll.

8. A machine of the class described having, in combination, a rotary disk knife, a feed roll for advancing work to the knife, a carrier located above the roll, a rounded bearing block vertically adjustable on the carrier, a bracket angularly adjustable on the block, an arm horizontally adjustable on the bracket, and a presser carried at the outer end of the arm and adapted to hold the work against the feed roll during the operation of the knife.

9. A machine of the class described having, in combination, a rotary disk skiving knife, a feed roll, a feed disk, and a carrier for the feed disk mounted for swinging movement toward and from the knife and roll.

10. A machine of the class described having, in combination, a skiving knife, a feed roll, a feed disk, and a carrier for said feed disk mounted for swinging movement about a substantially vertical axis toward and from the knife.

11. A machine of the class described having, in combination, a skiving knife, a feed roll, a feed disk, a carrier for said feed disk mounted for swinging movement about a substantially vertical axis toward and from the knife and roll, and a stop for engaging the carrier when it is swung toward the knife to locate the feed disk in predetermined operative position with respect to said knife and roll.

12. A machine of the class described having, in combination, a skiving knife, a feed roll, a feed disk adapted to cooperate with the feed roll, a carrier for the feed disk, a hollow bearing member on which the carrier is mounted for swinging movement, and means passing through the hollow bearing member for driving the feed disk.

13. A machine of the class described having, in combination, a skiving knife, a feedroll, a shaft upon which the feed roll is mounted, a feed disk, a shaft upon which the feed disk is mounted, a carrier for the feed disk shaft, a hollow bearing member upon which the carrier is mounted for swinging movement, and means passing through the hollow bearing member for driving the feed disk shaft from the feed roll shaft.

14. A machine of the class described having, in combination, a skiving knife, a feed roll, a feed disk, a presser, an edge guide, and a carrier for said feed disk, presser and guide mounted for swinging movement about a substantially vertical axis toward and from the knife and roll.

15. A machine of the class described having, in combination, a skiving knife, a feed roll, a feed disk, a presser, an edge guide, a carrier for said feed disk, presser and guide mounted for swinging movement about a substantially vertical axis toward and from the knife, and a stop for engaging the carrier when it is swung toward the knife to locate the feed disk, presser and edge guide in predetermined positions with respect to the knife and roll.

16. A machine of the class described having, in combination, a skiving knife, a feed roll, a shaft upon which the feed roll is mounted, a pulley on the shaft, a feed disk, a feed disk shaft, a pulley on the feed disk shaft, a presser, an edge guide, a carrier upon which the feed disk, the presser and the edge guide are mounted, a hollow bearing member about which the carrier may be swung, and a belt which passes around the pulley on the feed disk shaft through the hollow bearing member and around the pul ley on the feed roll shaft.

17. A machine of the class described having, in combination, a rotary disk knife, a feed roll, a feed disk, a carrier for the feed disk, a substantially vertical hearing about which the carrier is mounted for swinging movement, and a presser adjustably mounted on the carrier.

18. A machine of the class described hav ing, in combination, a rotary disk knife, a feed roll, a feed disk, a carrier for the feed disk, a substantially vertical bearing about which the carrier is mounted for swinging movement, and a presser mounted for horizontal and vertical adjustment on the carrier.

19. A machine of the class described having, in combination, a rotary disk knife, a feed roll, a feed disk, a bracket in which the feed disk is mounted, a carrier by which the bracket is adjustably held, a substantially vertical bearing about which the carrier may be swung, and a presser mounted for horizontal, vertical and angular adjustment on the carrier.

20. A machine of the class described having, in combination, a rotary disk knife, a feed roll for advancing work to the knife, a presser for holding the work against the roll, said presser having a stem provided with a slot, a bearing for the stem also provided wit-h a slot, and aspring-pressed lever ex tending through the slot in the bearing and resting upon the bottom of the slot in the stem of the presser.

21. A machine of the class described having, in combination, a rotary disk knife, a feed roll for advancing work to the knife, a bearing for said roll, a presser for holding the work against the roll, said presser having a stem provided with a slot, a bearing for the stem also provided with a slot, a spring-pressed, lever extending through the slot in the bearing and resting upon the bottom of the slot in the stem of the presser, and an arm overhanging the feed roll and the feed roll bearing at the outer end of which the bearing for the stem of the presser is carried, there being a free and unobstructed space between the under side of the arm and the upper side of the feed roll bearing.

22. A machine of the class described having, in combination, a rotary disk knife, a feed roll for advancing work to the knife, the plane of the knife being inclined to the axis of rotation of the roll, and means for adjusting the knife in a path which coincides with its plane.

23. A machine of the class described having, in combination, a rotary disk knife, a feed roll for advancing work to the kife, the plane of the knife being inclined to the axis of rotation of the roll, a bracket by which the knife is carried, and a stationary member having a guide extending in a direction parallel to the plane of the knife along which the bracket is adjustable.

24. A machine of the class described hav ing, in combination, a rotary disk knife, a curved guard having a portion concentric with the knife and a stem, and a member having a guideway in which the stem is adjustably mounted, said guideway being also concentric with the knife.

25. A machine of the class described having, in combination, a rotary disk knife, a guard located beneath the knife, a substantially vertically adjustable bracket, a pivot carried by the bracket and extending at an angle to the axis of rotation of the knife, and a carrier for the guard mounted on the pivot.

26. A machine of the class described. having, in combination, a rotary disk knife, a guard located beneath the knife, a substantially vertically adjustable bracket, a carrier for the guard pivoted to the bracket, and means for mounting the guard on the carrier for adjustment about the axis of rotation of the knife.

27. A machine of the class described havin, in combination, a rotary disk knife, a curved guard having a portion concentric with the knife, a pivot. extending transversely of the axis of rotation of the knife, and means for mounting the guard for downward swinging movement about said pivot away from the under side of the knife.

In testimony whereof I have signed my name to this specification.

MILTON H. BALLARD. 

